Strap retainer



FIG. 1 is a perspective view of the strap retainer with a cylindricalretainer element shown in broken lines for the purpose of illustratingenvironment and forming no part of the claim.

FIG. 2 is a front view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is a top view thereof.

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a side view thereof.

The broken line showing of *** is included for the purpose ofillustrating *** and forms no part of the claimed design.

The ornamental design for a strap retainer, as shown and described.